Urticating hairs or urticating bristles are one of the primary defense mechanisms used by numerous plants, almost all New World tarantulas, and various lepidopteran caterpillars. Urtica is Latin for "nettle", and bristles that urticate are characteristic of this type of plant, and many other plants in several families. This term also refers to certain types of barbed bristles that cover the dorsal and posterior surface of a tarantula's or caterpillar's abdomen. Many tarantula species eject bristles from their abdomens, directing them toward potential attackers. These bristles can embed themselves in the other animal's skin or eyes, causing physical irritation, usually to great discomfort. The term urticating hairs is a misnomer, as technically only mammals possess true hairs.
The Goliath birdeater belongs to the tarantula family Theraphosidae. Found in northern South America, it is the largest spider in the world by mass and body length, and second to the giant huntsman spider by leg span. It is also called the Goliath tarantula or Goliath bird-eating spider; the practice of calling theraphosids "bird-eating" derives from an early 18th-century copper engraving by Maria Sibylla Merian that shows one eating a hummingbird. Despite the spider's name, it rarely preys on birds.
The Chilean rose tarantula, also known as the rose hair tarantula, the Chilean fire tarantula, or the Chilean red-haired tarantula, is probably the most common species of tarantula available in American and European pet stores today, due to the large number of wild-caught specimens exported cheaply from their native Chile into the pet trade. The species is also known from Bolivia and Argentina.
Avicularia is a genus of the family Theraphosidae containing various species of arboreal tarantulas. The genus is native to Panama, the Caribbean and tropical South America. Each species in the genus has very distinguishable pink foot pads.
Avicularia avicularia, sometimes called the pinktoe tarantula, is a species of tarantula native from Venezuela, Guyana, Suriname, French Guiana and Trinidad and Tobago to Peru, Bolivia and Brazil. This species is sometimes called the Guyana pinktoe, or South American pinktoe.
Tliltocatl vagans is a species of tarantula known commonly as the Mexican red rump. It ranges predominantly in Mexico, but is also found in Central America. They are terrestrial, burrowing spiders. The reason for the name red rump is because of its distinctive red hairs on its abdomen. Like most tarantulas, they will eat anything they can overpower, which is usually insects, but small lizards and rodents may also be consumed. They can grow up to a solid 6.5 inch leg span, with males typically being smaller and thinner than the females. They prefer shrubland habitats.
Euathlus is a genus of South American tarantulas that was first described by Anton Ausserer in 1875. These spiders are medium sized and are usually found in high elevations in the Andes. It is a senior synonym of Paraphysa, and was formerly considered a senior synonym of Brachypelma, but this was later rejected.
Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. As of August 2022, 1,040 species have been identified, with 156 genera. The term "tarantula" is usually used to describe members of the family Theraphosidae, although many other members of the same infraorder (Mygalomorphae) are commonly referred to as "tarantulas" or "false tarantulas". Some of the more common species have become popular in the exotic pet trade. Many New World species kept as pets have setae known as urticating hairs that can cause irritation to the skin, and in extreme cases, cause damage to the eyes.
The skeleton tarantula, Ephebopus murinus, is a species of spider belonging to the family Theraphosidae (tarantulas), sub-family Aviculariinae. A New World species, it is native to several South American countries. Its common name is derived from the skeleton-like markings on its legs.
Cyriocosmus is a genus of tarantulas that was first described by Eugène Louis Simon in 1903. They are small to medium spiders, with a bicolored or one same color carapace.
Ephebopus is a genus of northeastern South American tarantulas that was first described by Eugène Louis Simon in 1892. Its relation to other tarantulas is one of the most uncertain in the family, and it has been frequently moved around and has been placed in each of the eight subfamilies at least once.
Tapinauchenius is a genus of tarantulas that was first described by Anton Ausserer in 1871. The name is a combination of the Greek ταπεινός, meaning "low", and αὐχήν, meaning "neck". In 2022, the genus Pseudoclamoris was transferred to Tapinauchenius.
Reversopelma is a monotypic genus of spider in the family Theraphosidae. It is Theraphosine and is native to Peru and Ecuador. The single species is Reversopelma petersi.
Thrixopelma is a genus of South American tarantulas that was first described by Günter E. W. Schmidt in 1994. They are medium to large tarantulas, usually being 35mm to 60mm in body length.
Kankuamo marquezi is the only species within the monotypic spider genus Kankuamo, in the family Theraphosidae. It is found in the Sierra Nevada de Santa Marta, Colombia. This spider has urticating hairs, the first to be classified as type VII. These sword-shaped, bristly hairs are used as a defense mechanism by stinging or stabbing. Most other species of tarantulas attack by throwing their hairs from a distance. Kankuamo hairs cover the entire body and have penetrating tips which will embed themselves into the skin or mucous membranes and cause severe irritation. Humans often experience mild to severe skin irritation or rashes.
Cardiopelma is a genus of spiders in the family Theraphosidae. It was first described in 1999 by Vol. As of 2017, it contains only one species, Cardiopelma mascatum, known only from Mexico, in the state of Oaxaca.
Caribena laeta, otherwise known as the Puerto Rican pink toe tarantula, is a species of spider in the family Theraphosidae, found in the US Virgin Islands, Puerto Rico, and Cuba, the last dubiously according to Caroline Fukushima and Rogério Bertani in 2017. It was first described by Carl Ludwig Koch in 1842 under the name Mygale laeta.
Acanthoscurria insubtilis also known as the Bolivian black velvet tarantula, is a spider which was first described by Eugène Simon in 1892. It is found in Bolivia, with some reports also stating in Brazil, though it is mainly in the Bolivian Rainforests.
Pamphobeteus antinous, also known as the Bolivian blue leg bird eater or steely blue leg, was first described by Reginald Innes Pocock in 1903. It is found in the rainforests of Bolivia and Peru, and are considered to be one of the bigger tarantulas.
Murphyarachne is a monotypic genus of Peruvian tarantulas, with one species, Murphyarachne ymasumacae. It was first described by Sherwood and Gabriel in 2022. The genus is named after Frances Mary Murphy and John Alan Murphy for their contributions to arachnology, and the Greek term "arachne", which is the word for spider.
